Black Diamond Carpentry & General Contracting

Black Diamond Carpentry & General Contracting is a one-person Westford operation run by Ryan Sullivan, a Journeyman Carpenter who passed his Construction Supervisor licensing exam in 1998. The business traces back to 1990, when Ed Buckingham founded it; Sullivan came on full-time in 1992 and took it over in 2002, renaming it to its current name. His Massachusetts Construction Supervisor license (CS-079065) is active with the state registry. The work spans additions (up to roughly 1,500 square feet), kitchen and bathroom remodeling, finished basements, custom built-ins and cabinetry, trim carpentry, and hardwood floors, according to both the company's own site and its BBB listing. Its BBB profile, open since 2002, carries an A+ grade with no complaints or government actions published. As a sole proprietorship with one employee, per BBB, Sullivan runs the operation personally — worth asking directly about current availability and timeline for a project of your size.